Zinc-58

Properties and data of the isotope ⁵⁸Zn.

Contents

See also: List of individual Zinc isotopes (and general data sources).

General data

Name of the isotope:Zinc-58; Zn-58Symbol:⁵⁸Zn or 5830ZnMass number A:58 (= number of nucleons)Atomic number Z:30 (= number of protons)Neutrons N:28Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):0.93333333333333 (= neutron-proton ratio)Neutron excess (N-Z):-2Isotopic mass:57.95459(5) u (atomic weight of Zinc-58)Nuclide mass:57.9381331 u (calculated nuclear mass without electrons)Mass excess:-42.29914 MeVMass defect:0.522778608 u (per nucleus)Nuclear binding energy:486.96513668 MeV (per nucleus)
8.39595063 MeV (average binding energy per nucleon)Separation energy:S_N = 17.82(21) MeV (first neutron)
S_P = 2.28(5) MeV (first proton)Half-life:86.7(24) msDecay constant λ:7.9947771690882 s^-1Specific activity α:8.446609518606 × 10⁺²² Bq g^-1
2282867437461.1 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Mirror nucleus:Nickel-58Year of discovery:1986

Radioactive Decay

Half-life T_½ = 86.7(24) ms respectively 8.67 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC/β⁺	⁵⁸Cu	> 97 %	9.37(5) MeV
ε, p	⁵⁷Ni	< 3 %

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 28) and isobaric (same nucleon number A = 58) with Zinc-58. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 28	Isobar A = 58
11	³⁹Na
12	⁴⁰Mg
13	⁴¹Al
14	⁴²Si
15	⁴³P
16	⁴⁴S
17	⁴⁵Cl
18	⁴⁶Ar
19	⁴⁷K	⁵⁸K
20	⁴⁸Ca	⁵⁸Ca
21	⁴⁹Sc	⁵⁸Sc
22	⁵⁰Ti	⁵⁸Ti
23	⁵¹V	⁵⁸V
24	⁵²Cr	⁵⁸Cr
25	⁵³Mn	⁵⁸Mn
26	⁵⁴Fe	⁵⁸Fe
27	⁵⁵Co	⁵⁸Co
28	⁵⁶Ni	⁵⁸Ni
29	⁵⁷Cu	⁵⁸Cu
30	⁵⁸Zn	⁵⁸Zn
31	⁵⁹Ga	⁵⁸Ga
32	⁶⁰Ge